http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114181392-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-74 |
| filingDate | 2021-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114181392-B |
| titleOfInvention | High solid content and low viscosity polyamic acid solution and its preparation method and application |
| abstract | The invention relates to a high-solid content and low-viscosity polyamic acid solution, a preparation method and application thereof, and solves the problem that in the prior art, when the solid content of the polyamic acid solution is relatively high in the synthesis process of the polyamic acid solution, the gel is likely to lose fluidity, and the next step cannot be carried out. Coating or spinning problems. The method comprises the following steps: performing a condensation polymerization reaction on a dianhydride monomer and a diamine monomer in a reaction solvent to obtain a high-concentration polyamic acid gel with a solid content of more than 30% and difficult to process, with a viscosity in the range of 1,000,000-2,000,000 cP Add a dehydrating agent and a catalyst to the above-mentioned high-concentration polyamic acid gel and mix fully, and the polyamic acid gel is gradually disentangled to obtain a polyamic acid solution with good fluidity and low viscosity, and the viscosity range is 1000-10000cP . Using the high solid content and low viscosity polyamic acid solution obtained by this method for coating and spinning, the prepared polyimide film has more excellent mechanical properties and lower thermal expansion coefficient, and the polyimide fiber has higher Draft ratio and better mechanical properties. |
| priorityDate | 2021-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.